For other items known as M34, see: M34 Disambiguation
Overview [ ]
40mm Gun Motor Carriage, M34
Developed From
M15A1 CGMC
Engine White 160AX I-6, liquid-cooled
The 40mm Gun Motor Carriage, M34 (abbreviated as M34 GMC ) is an American self-propelled anti-aircraft gun developed in 1950 from the M15A1 CGMC .
Development [ ] In 1950 self-propelled anti-aircraft guns such as the M16 MGMC and the M15A1 CGMC were shipped to Korea via Japan to fight in the Korean War. Ammunition shortages for the 37mm gun present on the M15A1 CGMC resulted in the replacement of the 37mm gun (and by extension the twin .50 caliber machine guns) with a 40mm Automatic Gun M1 . The conversion was called the 40mm Gun Motor Carriage, T19 , although it was later classified as limited standard under OCM 33894 as 40mm Gun Motor Carriage, M34 . 104 M15A1 CGMC were converted in Japan, where they then entered service with various units.
Variants [ ]
Combination Gun Motor Carriage, T28 Prototype model on the M2 Halftrack with 37mm M1A2 (in mount M3E1) and two watercooled .50 M2s. Four pilot models built.
Combination Gun Motor Carriage, T28E1 Prototype model on the M3 Halftrack with 37mm M1A2 (in mount M3E1) and two watercooled .50 M2s. 78 built, 76 of which were sent into service.
Combination Gun Motor Carriage, M15 Production model on the M3 Halftrack with 37mm M1A2 and two Machine Gun, Caliber .50, M2, HB, Flexible (together in Combination Gun Mount, M42). 600 built.
Combination Gun Motor Carriage, M15E1 Model with Combination Gun Mount, T87 instead of M42, cannon is now located above the machine guns and the gunshield has been removed.
Combination Gun Motor Carriage, M15A1 Adjusted and standardized M15E1 model. M54 Combination Gun Mount. 1,652 built. Derivatives 40mm Gun Motor Carriage, M34 — T19Converted M15A1 CGMC with all armament replaced with a 40mm Automatic Gun, M1 .
Multiple Gun Motor Carriage, T37 Converted T28 CGMC with four Machine Gun, Caliber .50, M2, HB, Flexible in M60 mount.
Multiple Gun Motor Carriage, T37E1 Converted T28 CGMC with four Machine Gun, Caliber .50, M2, HB, Flexible in M60E1 mount. Foreign M15 Special
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Service [ ]
Tracked Vehicles
Light Tanks
Light Tank
M8 (XM8 ) • Stingray (II )
Light Tank, Amphibious
AAAV • M551 Sheridan (A1 , XM551 )
IFV
M2 Bradley (A1 • A2 • A3 ) • M3 Bradley • M116 • MICV-65 • XM729 • XM701 • XM734 • XM800T • XM1202
Medium Tanks
Main Battle Tank
120S • CATTB • Lockheed-Martin Thumper • M1 Abrams (IP • E1 • A1 • A1AIM • A1D • A1FEP • A1HA • A1HC • A2 • A2SEPv1 • A2SEPv2 • A2SEPv3 • A3 ) • M1 Thumper • M60 (A1 • A1 (AOS) • A1 RISE • A1 RISE Passive • A1E1 • A1E2 • A1E3 • A1E4 • A2 • A3 • TTS • A3 SLEP • AX • 2000 ) • XM1-FSED Abrams • XM66 • XM803
Self-Propelled Guns
SPAA
M6 Bradley Linebacker • M42 (M42A1 ) • M113A2 ADATS • M163 • M247 Sergeant York • M741 • T100 • T141 (E1 ) • T149 • TS-11 • XM166 • XM246 • XM247
ATGMV
M901 ITV (A1 • A2 • A3 ) • T149
SPAT
M56 • SARAH • T86 • T101 • T114
SPFT
M132 (A1 )
SPM
105mm LA-3 • 105mm M52 • 105/110mm LA-7 • 155mm M44 (A1 ) • 155mm M53 • 155mm M109 (A1 • A2 • A2B • A3 • A3B • A4 • A5 • A5+ • A6 ) • 155mm T94E1 • 155mm T194E1 • 155mm XM2001 Crusader • 175mm M107 • 175mm T235 • 203.2mm M55 • 203.2mm M110 • 203.2mm T93 • 240mm T92 • TS-12 • TS-13 • TS-27
Self-Propelled Missile Launcher
M474 • M548 • M667 • M688 • M727 • M730 (A1 • A2 ) • M752 • XM474 (E1 • E2 ) • XM476 • XM546 (E1 ) • XM548 (E1 ) • XM730
SPM
81mm M125 (A1 • A2 ) • 81mm T257 (107mm E1 ) • 81mm XM755 • 107mm M106 (A1 • A2 ) • 107mm XM106 • 120mm M1064
SPRG
AT-1 • AT-2 • M50 Ontos (A1 ) • T164 • T165 (E2 ) • T166 • T167
Self-Propelled Rocket Artillery
M270 MLRS (A1 )
Explosive Related
Mine Laying
[[]]
Mine Clearing / Sweeping
M1 Panther II • M60 • M60 Panther
Misc Tanks
Ammunition Carrier
M992
APC
M1 Grizzly • M58 Wolf • M75 • M113 (A1 • A1E1 • A2 • A2E1 • A3 • E2 ) • M1059 (A3 ) • T55 • T56 • T113 (E1 • E2 ) • T117 • XM45 (E1 ) • XM733 (E1 ) • XM1108
ARV
M1 • M51 • XM696 • XM806 (E1 )
Bridge Laying
M48A2 • M48A5 • M60 • M60A1 • M104 Wolverine
Cargo
M116 • M548 • T60 • T107 • XM548 (E1 )
Command
M4 C2V • M577 • M1068
EW
M1015
Engineering & Maintenance
M579 Fitter • M728 • M728A1 • T118
Land Clearing
M60 with M9 Bulldozer
Landing Craft
LVTP-5
Medical
M113 AMEV
Observation, Spotting & Survey
M113 OSV • M981 FISTV
Training
M551 NTC
Utility
T122
Half-Tracked Vehicles
Transport
[[]]
Trucks
[[]]
Amphibious Transport
[[]]
Gun Motor Carriages (GMC)
M34, 40mm • T19, 40mm
Howitzer Motor Carriages (HMC)
[[]]
Multiple Gun Motor Carriages (MGMC)
M16 (A1 • A2 • B )
Mortar Motor Carriages (MMC)
[[]]
Utility
[[]]
Wheeled Vehicles
Offensive / Defensive
Armament Carrier
M1025 (A1 ) • M1026 (A1 ) • M1043 (A1 • A2 ) • M1044 (A1 ) • M1114 • M1116
Armored Cars
T55 • XM800W • XM808
Directed Energy Weapon Carrier
HLONS
Infantry Fighting Vehicles
LAV-25 (A1 • A2 ) • LAV-300 • LAV-600 • M1126 ICV
Self-Propelled Anti-Aircraft Gun & SAM
AN/TWQ-1 Avenger • LAV-AD • M998 Avenger • M1097 Avenger
Self-Propelled Anti-Tank Guided Missile
LAV-AT • M966 (A1 ) • M1025A2 • M1036 • M1045 (A1 • A2 ) • M1046 (A1 ) • M1115 • M1121 • M1134 ATGMV • M1167
Self-Propelled Mortar
Dragon Fire • LAV-EFSS • LAV-M • M1129 MCV
Self-Propelled Rocket Artillery
M142 HIMARS
Tank Destroyer
M1128 MGS
Other
Ammunition Carrier
[[]]
APC
[[]]
Cargo
M923 • M924 • M925 • M926 • M927 • M928 • M939 • M998 (A1 ) • M1038 (A1 ) • M1097 (A1 • A2 ) • M1123 • M1113
Command
LAV-C2 • M1130 CV
Engineering
LAV-R • M929 • M930 • M931 • M932 • M936 • M1132 ESV
IMV
Buffalo • Caiman • Cheetah • Cougar • M1025 (M • N • R • S • T ) • M1113 (M • N • R • S • T ) • M-ATV • MaxxPro • MRAP (II ) • RG-31 • RG-33 • ULTRA AP (II )
Medical
M996 • M997 (A1 • A2 ) • M1035 (A1 • A2 ) • M1133 MEV
MRAP
M1240 (A1 ) • M1245 (A1 ) • M1277
Observation, Spotting & Survey
M1131 FSV
Shelter Carrier
M1037 • M1042 • M1097A2 • M1113
Reconnaissance
DPV • LSV • M1127 RV
Transport & Towing
M939 • M998 (A1 ) • M1038 (A1 ) • M1069 • M1097 (A1 • A2 ) • M1123 • M1113 • M1116 • M1151 • M1152 • M1165
Utility
JLTV • LAV-LOG • LAV-MEWSS • M934 • M935 • M939 • M1097A2
Sources
Books
Online
Documents
• Halftrack, R.P. Hunnicutt
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